Superzoom effect in Video Sequence Editor
In the absence of answers after 18 hours and meagre 12 views, I’ll start building my own answer – block by block.


How to locate target spot on a strip at a very high zoom?
Reverse your workflow by centering the strip on target spot first, but begin at a manageable Scale. Then multiply Scale and Position (or Position shift value if initial Position wasn’t zero) by exactly the same factor. Fine-tune Position if you can. If you can’t, undo last multiplication and redo it using a smaller factor. Repeat until you reach the desired Scale.


a) How to disable cropping of the output to the Render Area in the preview window?
&mdash; (Impossible?)
b) How to pan a strip in the preview area?
(Impossible?) Impossible!

Why does exponential interpolation mode fail during superzoom?
Buggy Blender? Workaround: approximate desired interpolation curves manually using multiple linear interpolation segments.
How to align interpolation curves of different strips?
No relevant functionality in Blender. Workaround: approximate desired interpolation curves manually using multiple linear interpolation segments.


Edit: 8 November 2016


Leave it. I’ll sooner make it manually in C (programming language) than in Blender + StackExchange. Literally.


Interesting links


“Rescaling in the VSE yields low resloution, blurry images”
“How do I prevent VSE strips using Image Offset from being cropped before the transform effect can shrink them onto the screen?”
“VSE. I need to rotate image with arbitrary center pivot point that is not in the center of the image”
“§11. Blender Video Editing (Importing Images [Overlay/Resize/Rotate])” (YouTube)